spring - 强制@Autowired字段的cglib代理 [英] spring - forcing cglib proxies for @Autowired fields

问题描述

我有混合堆栈：EJB和Spring。对于自动装配Spring到EJB，我使用 SpringBeanAutowiringInterceptor （不确定这是否会影响我的问题）。

Whlie尝试以下列方式自动装配bean：

  @Scope（proxyMode = ScopedProxyMode.TARGET_CLASS，value =singleton）
 @Repository 
公共类ClassA imlpements IfA {
 ... 
} 
 
 
 @Scope（value =singleton）
 @Repository 
公共类ClassB {
 @Autowired 
私有ClassA classA; 
 
 ... 
} 
  

我收到错误：

 无法自动装配字段：private ClassA ClassB.classA;嵌套异常是java.lang.IllegalArgumentException：无法将ClassA字段ClassB.classA设置为com.sun.proxy。$ Proxy257。有关更多详细信息，请参阅server.log。 
  

据我所知，问题是使用了JDK代理（如 ClassA 实现接口 IfA ），而我需要cglib。

<但是我不明白。根据文档，注释： @Scope（proxyMode = ScopedProxyMode.TARGET_CLASS，应该在这里完成工作。

好吧，我不能选择使用接口（作为字段类型）。

任何想法如何在这里强制执行cglib代理？

编辑：

不确定它是否相关，但我正在运行glassfish 3.1.x.

和stacktrace（部分，因为我不能在这里公开所有的类名：

 引起：org.springframework.beans.factory.BeanCreationException：创建名为'classB'的bean时出错：自动连接依赖项的注入失败;嵌套异常是org.springframework.beans.factory.BeanCreationException：org.springframework.beans .factory.BeanCreationException：无法自动装配字段：private ClassA ClassB.classA;嵌套异常是java.lang.IllegalArgumentException：无法将ClassA字段ClassB.classA设置为com.sun.proxy。$ Proxy257。
 at org。 SP ringframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues（AutowiredAnnotationBeanPostProcessor.java:288）
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1116）
 at org。 springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:519）
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:458）
 at org。 springframework.beans.factory.support.AbstractBeanFactory $ 1.getObject（AbstractBeanFactory.java:295）
 at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:223）
 at org .springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:292）
 at org.springframework.beans.factory。 support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:194）
 org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates（DefaultListableBeanFactory.java:912）
 at org.springframework.beans.factory。 support.DefaultListableBeanFactory.doResolveDependency（DefaultListableBeanFactory.java:855）
 at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency（DefaultListableBeanFactory.java:770)
 at org.springframework.beans.factory。 annotation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor.java:486）
 ... 89更多
引起：org.springframework.beans.factory.BeanCreationException：无法自动装配字段：private ClassA ClassB.classA ;嵌套异常是java.lang.IllegalArgumentException：无法将ClassA字段ClassB.classA设置为com.sun.proxy。$ Proxy257。有关更多详细信息，请参阅server.log。 
 at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor.java:514）
 at org.springframework.beans.factory.annotation.InjectionMetadata.inject（InjectionMetadata.java： 87）
 at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues（AutowiredAnnotationBeanPostProcessor.java:285）
 ... 100 more 
引起：java.lang.IllegalArgumentException：可以未将ClassA字段ClassB.classA设置为com.sun.proxy。$ Proxy257 
 at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException（UnsafeFieldAccessorImpl.java:164）
 at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException（UnsafeFieldAccessorImpl。 java：168）
 at sun.reflect.UnsafeObjectFieldAccessorImpl.set（UnsafeObjectFieldAccessorImpl.java:81）
 at java.lang.reflect.Field.set（Field.java:741) 
 at org .springframework .beans.factory.annotation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor.java:510）
 ... 102更多
  

解决方案

您不应该对单身人士使用aop范围代理。

使用< ; aop：aspectj-autoproxy proxy-target-class =true/> 或 @EnableAspectJAutoProxy（proxyTargetClass = true）在你的spring配置中要强制使用cglib代理的文件或类。

I have mixed stack: EJB and Spring. For autowiring Spring to EJBs I use SpringBeanAutowiringInterceptor (not sure if that could affect the problem I have).

Whlie trying to autowire beans in a following way:

@Scope(proxyMode=ScopedProxyMode.TARGET_CLASS, value="singleton")
@Repository
public class ClassA imlpements IfA {
    ...
}


@Scope(value="singleton")
@Repository
public class ClassB {
    @Autowired
    private ClassA classA;

    ...
}

I get error:

Could not autowire field: private ClassA ClassB.classA; nested exception is java.lang.IllegalArgumentException: Can not set ClassA field ClassB.classA to com.sun.proxy.$Proxy257. Please see server.log for more details.

As far as I've understood, the problem is that JDK proxies are used (as ClassA implements interface IfA), while I'd need cglib ones.

But I don't get it. Based on the docs, the annotation: @Scope(proxyMode=ScopedProxyMode.TARGET_CLASS, should do the job here.

Well and it's not an option for me to use interfaces (as a field type).

Any idea how to force cglib proxying here?

EDIT:

Not sure if it's relevant, but I'm running glassfish 3.1.x.

And stacktrace (partial, as I can't expose all the class names here:

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'classB': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private ClassA ClassB.classA; nested exception is java.lang.IllegalArgumentException: Can not set ClassA field ClassB.classA to com.sun.proxy.$Proxy257.
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:288)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1116)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:912)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:855)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:770)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:486)
    ... 89 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private ClassA ClassB.classA; nested exception is java.lang.IllegalArgumentException: Can not set ClassA field ClassB.classA to com.sun.proxy.$Proxy257. Please see server.log for more details.
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:514)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:285)
    ... 100 more
Caused by: java.lang.IllegalArgumentException: Can not set ClassA field ClassB.classA to com.sun.proxy.$Proxy257
    at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:164)
    at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:168)
    at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81)
    at java.lang.reflect.Field.set(Field.java:741)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:510)
    ... 102 more

解决方案

You should not use aop scoped proxies for singletons.

Use <aop:aspectj-autoproxy proxy-target-class="true" /> or @EnableAspectJAutoProxy(proxyTargetClass=true) in your spring configuration file or class to force cglib proxies.

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